0. Spacecraft database import (https://www.ucsusa.org/resources/satellite-database)

Spacecraft database is in excel format. Mainly empty columns and columns that contain insignificant data (for the current case) have been removed. Database contains information about spacecraft orbital parameteres, mass, country of origin, launch site, purpose, etc.

1. Some interesting data

1.1 Top spacecraft operating countries

1.2 Satellite prime purpose

1.3 Launched by year

1.4 Spacecraft launching sites

1.5 Spacecraft users

2. K-means clastering by orbit class

2.1 Perigee and eccentricity

Let's try to cluster spacecrafts by orbit class using perigee and eccentricity (yes, we already know orbit class thanks to 'Class of orbit' column, but let's do it anyway, just to see if it is possible).

Well, there are four types of orbits in our dataset, so there shoud be 4 clasters.

It does not look right at all. Let's try to scale data.

2.2 Perigee and eccentricity, scaled

So much better! Let's compare our results with dataset.

Not perfect but pretty close.

I'm going to add some features and see if it will improve clustering.

2.3 Perigee, apogee, period and eccentricity, scaled

I guess no, the result is the same.